Sophie111:
The view that disorders one agrees with are caused by nature while those one cannot accept are caused by God (which QED cannot be a disorder and must be psychotic) would itself be a disordered way of thinking I suggest
First, if by “nature” you mean God then you are wrong. God is not the cause of disorders. Secondly, one does not accept or reject disorders, they simply are as a result of Original Sin. However, our free will allows us to act out or not act out our particular disorders. By accepting His grace, we can overcome our disordered feelings.
I am sorry but if you cannot understand or agree with the commonly accepted findings of medicine (even by catholic professionals) on the possible biological basis of such gender/sex disorders, or basic theology and the difference between Nature and God in human reproduction then further converse with you is not possible.
The disorder in question is possibly a nature caused mismatch between the sex of the brain and the sex of the body. It is not psychotic to posit this disorder can happen…it is still an open medical question…as is the etiology of homosexual feelings.
It is therefore not necessarily pyschotic for a person to claim this mismatch from birth.
Nor is it sinful or psychotic for such a person to ease their perpetual discomfort by adopting a female public name even if they are morphologically male.
We get it that it makes you personally very uncomfortable to have to consider these possibilities let alone help them ease their disorder that they cannot escape. You can escape your discomfort simply by not coming to this thread at any time.
But being a Christian and all maybe you would want to make a few sacrifices for your fellow man (like calling a male by their chosen female name) especially if you are a caring nurse and they are terminal.
Then again maybe not - just tell others they are psychotic and use careful impersonal pronouns to relieve your own discomfort…because calling such a person by their chosen female name would be to deceive which is non Christian.
Theres as lot to be said for “consistency is the refuge of the weak”.
Wise Christians know when to be weak and when to be strong

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Such “deception” is not deception, it is Christian charity if not justice.
Personally I learnt long ago that a Christian is a person not chained to rigid thinking or cultural stereotypes or unbreakable universals. We see persons not propoganda. We know when the Spirit calls and the time is right to walk upstream even if it looks wrong to others and maybe even to parts of ourselves. Afterwards we know if it was the Holy Spirit or stupidity. Yet some Christians never take the risk but hide behind rigidity. And the Holy Spirit weeps.